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From: Stephen Carrier <carrier@berkeley.edu>
Date: Tue, 15 Sep 2020 09:22:30 -0700
To: Peter Board <p_board@hotmail.com>
Subject: Re: Cygwin 3.1.5, 3.1.6 and 3.1.7 builds reporting tty errors with
 OpenSSH Services in indows Event Logs
Message-ID: <20200915162230.GA14401@iguana.crashland.org>
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On Mon, Sep 14, 2020 at 08:18:53AM +0000, Peter Board via Cygwin wrote:
> Hi,
> 
> I am trying to update our Cygwin libraries at work, which we use on many servers to provide OpenSSH services.
> I have been making update packages for many years from a Cygwin install on a development server, and went to update our systems to the latest OpenSSH 8.3p1 build.
> 
> However after making the update package, I found that the Windows Event Log (or if Syslogd is setup – which we do have in our general Cygwin deployment /var/log/messages) gets two errors when using any version of the Cygwin Libraries after the 3.1.4 build.
> 
> 
> Sep 14 12:06:48 hostname sshd: PID 2093: error: Failed to disconnect from controlling tty.
> 
> Sep 14 12:06:48 hostname sshd: PID 2093: error: ioctl(TIOCSCTTY): Operation not permitted

Can this be reproduced in a standard cygwin install?  It seems as if
your have a customized environment where you compile your own packages,
and updated the cygwin libs perhaps w/o updating openssh at the same time.

Stephen
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